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Backends: Win32: revert accidental deletion of ImGui_ImplWin32_EnableAlphaCompositing() in a566ecc (#3218)

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This was still in docking, but moved back in upper locaton.
# Conflicts:
#	backends/imgui_impl_win32.cpp
This commit is contained in:
ocornut 2023-04-20 10:38:45 +02:00
parent 88ac2ced7c
commit 07e07030a6
1 changed files with 40 additions and 40 deletions
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80
backends/imgui_impl_win32.cpp
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@ -899,7 +899,47 @@ float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd)
return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor); return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor);
} }
//---------------------------------------------------------------------------------------------------------
// Transparency related helpers (optional)
//-------------------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------------------
#if defined(_MSC_VER)
#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi'
#endif
// [experimental]
// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c
// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW)
void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd)
{
if (!_IsWindowsVistaOrGreater())
return;
BOOL composition;
if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition)
return;
BOOL opaque;
DWORD color;
if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque))
{
HRGN region = ::CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
::DeleteObject(region);
}
else
{
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
}
}
//---------------------------------------------------------------------------------------------------------
// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT // MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously. // This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously.
// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first.. // If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
@ -1220,43 +1260,3 @@ static void ImGui_ImplWin32_ShutdownPlatformInterface()
} }
//--------------------------------------------------------------------------------------------------------- //---------------------------------------------------------------------------------------------------------
// Transparency related helpers (optional)
//--------------------------------------------------------------------------------------------------------
#if defined(_MSC_VER)
#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi'
#endif
// [experimental]
// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c
// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW)
void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd)
{
if (!_IsWindowsVistaOrGreater())
return;
BOOL composition;
if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition)
return;
BOOL opaque;
DWORD color;
if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque))
{
HRGN region = ::CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
::DeleteObject(region);
}
else
{
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
}
}
//---------------------------------------------------------------------------------------------------------